Revert of Reland [heap] Avoid the use of cells to point from code to new-space objects.

src/arm64/macro-assembler-arm64.cc

Index: src/arm64/macro-assembler-arm64.cc
diff --git a/src/arm64/macro-assembler-arm64.cc b/src/arm64/macro-assembler-arm64.cc
index 543dc7234bdf847b38bb1965e05ba78afffb0557..86ddefa9ad40ea23fe770d8edbe3ef8ea9df62a6 100644
--- a/src/arm64/macro-assembler-arm64.cc
+++ b/src/arm64/macro-assembler-arm64.cc
@@ -1425,7 +1425,14 @@
 
 void MacroAssembler::LoadHeapObject(Register result,
                                     Handle<HeapObject> object) {
-  Mov(result, Operand(object));
+  AllowDeferredHandleDereference using_raw_address;
+  if (isolate()->heap()->InNewSpace(*object)) {
+    Handle<Cell> cell = isolate()->factory()->NewCell(object);
+    Mov(result, Operand(cell));
+    Ldr(result, FieldMemOperand(result, Cell::kValueOffset));
+  } else {
+    Mov(result, Operand(object));
+  }
 }